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| Paper: |
Spectroscopic Orbit of the Eclipsing Binary BD +52°2009 |
| Volume: |
185, Precise Stellar Radial Velocities, IAU Colloquium 170 |
| Page: |
325 |
| Authors: |
Khalesseh, B. |
| Abstract: |
The light variability of the above system was suspected first by Schilt and Hill (1938) and its eclipsing binary nature was confirmed by Reim and Geger (1955). Photoelectric minimum times of this Algol type eclipsing binary system have been presented by many observers, Scarfe et al (1973), Pohl and Kizilimark (1975). The spectroscopic orbital elements of the brighter A0 component has been obtained from 56 radial velocities by Ebbighausen (1967). In this work new radial velocity measurements of the BD+52 ˆ 2009 system based on Reticon observations are presented. The velocity measurements themselves are based on fitting theoretical profiles generated by a physical model of the binary, to the observed cross-correlation functions (ccf). Such profiles match this function very well, much better in fact than gaussian profiles which are generally used. The procedures used here have been mentioned in a paper by Hill and Khalesseh (1991). Stars, HD154417 and HR7001 were used as the comparison stars which were successfully used in work by Khalesseh and Hill (1992). All spectrograms were obtained at the Dominion Astrophysical Observatory (DAO) of Victoria with a variety of instruments which are described in the paper by Hill et al (1994). The above system with ``c-e'' quality orbits was selected from the Eighth Catalogue of the Orbital Elements of Spectroscopic Stars (Batten et al 1989). The results show: (The ADS regrets that the array can not be depicted in ASCII.) |
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